The Hydro-Foam™ Ranger™ Nozzles from WILLIAMS FIRE & HAZARD CONTROL are among the most advanced fire fighting nozzles ever made.  They incorporate the effective range of an automatic nozzle with the exclusive combination of self educting/selectable “constant metering” foam proportioning.  Rangers 1.0, 1.5 and 2.0 deliver flow ranges of 250 – 1,000, 500 – 1,500 and 750 – 2,000 gpm (946 – 3,785, 1,893 – 5,678 and 2,839 – 7,570 Lpm), respectively while automatically maintaining  the tip pressure at a nominal 100 ± 10 psi (6.9 bar) throughout their entire flow range, thus maximizing the effective reach distance regardless of the flow.